Advertisements
Advertisements
Question
A current of I ampere flows in a wire forming a circular arc of radius r metres subtending an angle θ at the centre as shown. The magnetic field a the centre O in tesla is ______.
Options
`(mu_0"I"theta)/(4pi"r")`
`(mu_0"I"theta)/(2pi"r")`
`(mu_0"I"theta)/(2"r")`
`(mu_0"I"theta)/(4"r")`
MCQ
Fill in the Blanks
Solution
A current of I ampere flows in a wire forming a circular arc of radius r metres subtending an angle θ at the centre as shown. The magnetic field a the centre O in tesla is `underlinebb((mu_0"I"theta)/(4pi"r"))`.
Explanation:
B = `(mu_0"I")/(2"r")xxtheta/(2pi)`
= `(mu_0"I"theta)/(4pi"r")`
shaalaa.com
Magnetic Fields Due to Electric Current
Is there an error in this question or solution?
